Question

The average height of 10 students in a
class was calculated as 166 cm on a
verification
it was found that one
recorded as 160 cm
the instead
of 150cm find the correct mean height

​

Answer 1

Step-by-step explanation:

Here,

x

ˉ

=166cm and n=10

We have

x

ˉ

=

n

∑x

=

10

∑x

i.e 166=

10

∑x

or ∑x=1660

The incorrect ∑x=1660

The correct ∑x= incorrect ∑x− the wrong value + correct value

=1660−160+150=1650

Hence, the correct A.M. =

10

1650

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=165cm.

Answer 2

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